Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Patent
1992-09-28
1993-07-27
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Echo systems
Distance or direction finding
367118, 367136, 367117, G01S 1500
Patent
active
052316092
ABSTRACT:
A system and method of indirect underwater acoustic ocean surveillance is sclosed requiring at least two sonar platforms, usually ships, travelling some distance apart. At least one of the platforms transmits sonar pulses, portions of which are scattered off the ocean floor to at least one companion sonar receiver platform. The receiver platform is provided with means to analyze the received scattered sonic pulses to determine if a submerged object such as a submarine is obstructing a portion of the pulse, thus casting an acoustic shadow. With accurate positioning information supplied by a navigation information system such as the NAVSTAR GLOBAL POSITIONING SYSTEM (GPS), and by combining pulse measurements over several positions the system will be able to locate, identify, and track the obstructing object by analyzing these acoustic shadows or silhouettes. Geometric silhouette reconstruction techniques and other mathematical techniques may be employed to construct an image of the submerged object.
REFERENCES:
patent: 4924448 (1990-05-01), Gaer
Bechtel James B.
Pihulic Daniel T.
The United States of America as represented by the Secretary of
Tura James V.
Verona Susan E.
LandOfFree
Multiplatform sonar system and method for underwater surveillanc does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multiplatform sonar system and method for underwater surveillanc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiplatform sonar system and method for underwater surveillanc will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2347120